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6-1 Indicators and Error Processing
6-1
Indicators and Error Processing
MS NS
LOCK I/O PWR I/O
Green Red Green Red Yellow Green Yellow Red
Description
Probable cause and remedy
-
-
-
Safety I/O communications
in progress (normal status)
- - -
Standard
I/O
communications or
message communications
in progress (normal status)
-
-
-
The DST1 performing
initialization process or
waiting for configuration.
-
-
-
-
Waiting for safety or
standard connection
-
-
-
-
Communications timeout
Check the following items and
restart the DST1.
Are lengths of cables (trunk and
branch lines) correct?
Are cables broken or loose?
Are Terminating Resistors
connected to both ends of the trunk
line only?
Is noise interference excessive?
BusOff status
(communications stopped
due to consecutive data
errors)
Check the following items and
restart the DST1.
Are lengths of cables (trunk and
branch lines) correct?
Are cables broken or loose?
Are Terminating Resistors
connected to both ends of the trunk
line only?
Is noise interference excessive?
- - - -
Node address duplication
Reset the DST1 so that it has a
unique node address, and then
restart the DST1.
-
-
-
-
Waiting for completion of
node address duplication
check at the master
Reset the DST1 so that it has a
unique node address, and then
restart the DST1.
- - - -
Switch
settings
are
incorrect
Check the node address, and then
restart the DST1.
-
System failure
Replace the DST1.
- - - - -
Input/output power is not
supplied.
Check the following items.
Are cables broken?
Is the power voltage within
specifications?
- - - - -
An error occurred in an
input/ output circuit.
Check the following items.
Has a ground fault occurred in the
signal line?
Is the signal line broken?
Are there any troubles with the
connected device?
Is the power source (positive side)
in contact with the signal line?
Has a short-circuit occurred in the
signal line?
- - - - -
When dual channels are
set: An error occurred in
the other channel.
: Lit
: Flashing
: Not lit
6-2
Содержание DST1 Series
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Страница 5: ...DST1 series Safety I O Terminals Operation Manual Produced April 2005 ...
Страница 6: ......
Страница 24: ...Section 1 Overview ...
Страница 44: ...Section 2 General Procedure ...
Страница 50: ...Section 3 Configuration ...
Страница 63: ...Section 4 Specifications ...
Страница 67: ...Section 5 DST1 series ...
Страница 79: ...Section 6 Troubleshooting and Maintenance ...
Страница 87: ...Section 7 Wiring Examples ...
Страница 97: ...Appendices ...
Страница 114: ...Cat No Z904 E1 01 OPERATION MANUAL DST1 series Safety I O Terminals ...